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<table width="100%" summary="page for hotspots2006"><tr><td>hotspots2006</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Hawaian island chain hotspot Argon-Argon ages</h2>

<h3>Description</h3>

<p>Ar-Ar Ages (millions of years) and distances (km) from Kilauea 
along the trend of the chain of Hawaian volcanic islands and
other seamounts that are believed to have been created by a
moving &quot;hot spot&quot;. 
</p>


<h3>Usage</h3>

<pre>data(hotspots2006)</pre>


<h3>Format</h3>

<p>A data frame with 10 observations on the following 6 variables.
</p>

<dl>
<dt><code>age</code></dt><dd><p>Ar-Ar age</p>
</dd>
<dt><code>CI95lim</code></dt><dd><p>Measurement error; 95% CI</p>
</dd>
<dt><code>geoErr</code></dt><dd><p>Geological Uncertainty</p>
</dd>
<dt><code>totplus</code></dt><dd><p>Total uncertainty (+)</p>
</dd>
<dt><code>totminus</code></dt><dd><p>Total uncertainty (-)</p>
</dd>
<dt><code>distance</code></dt><dd><p>Distance in kilometers</p>
</dd>
</dl>



<h3>Details</h3>

<p>Note that measurement error is small relative to geological
uncertainty. Geological uncertainty arises because lavas are
likely to have erupted, over a period of up to 2 million years,
somewhat after passage over the hot spot's centre.  Dredging
or drilling will in general have accessed larvas from the
younger half of this interval.  Hence the asymmetry in the
geological uncertainty.
</p>


<h3>Source</h3>

<p>Warren D. Sharp and David A. Clague, 50-Ma initiation of
Hawaiian-Emperor bend records major change in Pacific Plate
motion. Science 313: 1281-1284 (2006).
</p>


<h3>Examples</h3>

<pre>
data(hotspots2006)
</pre>


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